%% You should probably cite draft-ietf-isis-mpls-elc instead of this I-D.
@techreport{xu-isis-mpls-elc-02,
    number =    {draft-xu-isis-mpls-elc-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-xu-isis-mpls-elc/02/},
    author =    {Xiaohu Xu and Sriganesh Kini and Siva Sivabalan and Clarence Filsfils and Stephane Litkowski},
    title =     {{Signaling Entropy Label Capability Using IS-IS}},
    pagetotal = 5,
    year =      2015,
    month =     apr,
    day =       20,
    abstract =  {Multi Protocol Label Switching (MPLS) has defined a mechanism to load balance traffic flows using Entropy Labels (EL). An ingress LSR cannot insert ELs for packets going into a given tunnel unless an egress LSR has indicated that it can process ELs for that tunnel. This draft defines a mechanism to signal that capability using IS-IS. This mechanism is useful when the label advertisement is also done via IS-IS.},
}